Across
- 2. equipment used to measure electric current
- 5. force pointing towards the center of a circle
- 7. unit of electric current
- 8. change of speed in a certain time
- 9. when light passes from a medium to another
- 12. force of attraction between two masses
- 13. subatomic particle without charge
- 14. amount of sunlight reflected by an object
- 15. unit of potential difference
Down
- 1. when two waves overlap each other
- 3. force times time or change in momentum
- 4. unit of pressure
- 6. power out divided by the total power in
- 10. force that opposes motion
- 11. speed of a wave divided by its frequency